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4042778 – Sprenger Sensogan Dynamic RS WH Ultra Eggbutt – 14mm

Double jointed bit angled forward with a 14mm sensogan mouthpiece with a unique roller in the centre lozenge to stimulate the tongue, with 65mm D shaped eggbutt fixed cheeks.

Product Code: 4042778

Additional information

Mouthpiece Width


Ring Size

Mouthpiece Thickness

Mouthpiece Material

Trial Option





For more information on how the trial system works



 Sprenger SENSOGAN Dynamic RS WH Ultra Eggbutt Snaffle – Stainless Steel Rings – 14mm – RRP £211


  • KK-ULTRA Bits take advantage of the exceptional sensitivity of the tongue.
  • Adapted to the anatomy of the horse’s mouth.
  • No pressure put on the palate.
  • Clear instructions given as the tongue’s sense of touch is utilised.
  • Made from SENSOGAN the approved metal for horses



 About the Dynamic RS Mouthpiece

Stimulates the horse to accept the bit more easily

The ergonomically formed mouthpiece lies perfectly in the horses mouth resulting in soft and even pressure on the entire tongue area, encouraging the horse to chew. In addition this bit supports the contact to the corners of the mouth in a very effective way keeping the horse on the bit.

The gentle joint in the middle which is angled forward – the characteristic feature of the KK ULTRA and fine eggbutt design makes it a very friendly bit. The mouthpiece is made of AURIGAN, the material that activates the chewing activity of the horse.

The new DYNAMIC RS bit gives soft but very effective instructions for a better contact between the horse and rider.

About the WH-ULTRA Mouthpiece

The WH-ULTRA developed by Lisa Wilcox and Ernst Hoyos together with Sprenger is a double-jointed bit which is angled forward by 45 degrees, that features a unique roller in the centre section.

The unique roller provides a gentle stimulation to the tongue, which encourages the horse to chew prompting salivation, allowing the acceptance of the bit therefore relaxation of the jaw. It has been Lisas and Ernsts experience that through gentle stimulation the horses learn more quickly to accept the bit softening their entire topline enabling to perform the movements with more relaxation, thoroughness and more harmony.


About the KK Ultra Lozenge


The KK ULTRA bits take advantage of the exceptional sensitivity of the tongue. Did you know that because the tongue is extremely sensitive it multiplies perceptions in this area dramatically?

You might also recognize the feeling if the human tongue finds a little how in the tooth it gives the impression there is a huge gap. A horses tongue works in much the same way, whilst eating it can filter out small stones from the food. In collaboration with SPRENGER, the Veterinary University in Hanover started a new project. They examined more that 70 horses heads and used various methods to take measurements.

The analysis of this information produced unexpected results:


  • The interior of the volume of the mouth was less than had been previously thought
  • The palate was both smaller and very often flatter than previously imagined
  • The space left for a bit is therefore very limited 




SPRENGER used this new information for the development of the KK ULTRA. The aim was to improve the bits bit not make them too severe.


How can the sense of touch be stimulated to obtain the desired effect?


  1. As the palate is narrower than originally assumed the lozenge in the centre was shortened (no pressure on the palate).
  2. The angle of the link was turned at 45. This ensures that when the reins are pulled the rounded link rests fully in the tongue without squeezing it.
  3. The tongues sense of touch is utilised and clear instructions are given through the reins.




SENSOGAN® is a new bit material developed by SPRENGER and is the result of two years of research and development aiming to improve on the AURIGAN material which has made SPRENGER bits so popular with so many professional and amateur riders.

SENSOGAN® has improved properties but also a new appearance. The white-gold colour gives the bit a discreet and elegant look and due to the improved material mix, SENSOGAN® does not tarnish easily as the chewing activity of the horse is optimally supported. The bit will stay true to its white gold colour for much longer and can also be polished to a high shine at any point in its lifetime. The new SENSOGAN® range is identified by its unique stamped black ring on the cheeks of the mouthpieces.


The special challenge in developing SENSOGAN® was to maintain the positive features of Aurigan yet to intensify them, giving an even more delicate and sophisticated connection to the horse. In the twenty or so years that Aurigan has been available, many companies have copied its colour but never its properties. Sprenger knew the time was right to launch their new optimal bitting collection with an unmatched look anywhere else in the market.




It is the distinctive composition of Copper, Manganese and Zinc that makes SENSOGAN® so special. The reduced copper content combined with the manganese results in a more regulated process of oxidation. Tests with the veterinary college of Hannover and the German Riding School in Warendorf  showed without doubt this combination of metals has a positive influence on the horses satisfaction, motivation and willingness to perform.


Manganese is known to assist with building up connective tissue as well as for muscle and energy metabolism, it is also known to reduce histamine and can help prevent skin reactions. The feed industry has recently recognised manganese as an important feed additive for competition horses.


Available in a wide range of the popular bit styles and sizes from Sprenger including the KK Ultra, Dynamic RS, WH Ultra and Turnado ranges, plus many other individual weymouths, bradoons and jumping and training bits. Different bit rings can also be ordered to match stainless steel or bronze coloured bridle work.





Important Information


Make sure the bit is fitted correctly in the mouth. The arrow must always be on the left hand side pointing forwards.




Please Note:

For the purposes of trials of this item, you may be sent an
Aurigan Item if there are no Sensogan ones in stock.   If you would prefer to purchase a Sensogan
one at the end of the trial then this can be arranged for you.   The material of the mouthpiece wouldnt
alter the effects of the trial as much as the type of mouthpiece would.



Additional information

Mouthpiece Width


Ring Size

Mouthpiece Thickness

Mouthpiece Material

Trial Option